<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>交换两个变量的值</title>
		<script type="text/javascript">
			var temp;
			var apple1 = '青苹果';
			var apple2 = '红苹果';
			
			temp = apple1;
			apple1 = apple2;
			apple2 = temp;
			console.log('apple1',apple1);
			console.log('apple2',apple2);
			var num1 = 019;//相当于023
			console.log(num1)
		</script>
	</head>
	<body>
		
	</body>
</html>
